Hypothesis: Specific phases of the IVF cycle will have differential effects on the burden of depressive symptoms. Specifically, these phases include: 1) the phase prior to egg retrieval, 2) the phase after embryo transfer while a woman waits for the pregnancy test or her menstrual period, and 3) the phase after the experience of a negative pregnancy test (when applicable) following an IVF cycle. We seek to characterize factors associated both with vulnerability to more depressive symptoms and to resilience in the context of the different phases of IVF treatment.